11. In an experiment to determine the size of an oil molecule, clean water was placed in a large basin and then left over several minutes without any disturbance. Lycopodium powder was carefully spread
on the water surface. A drop of oil was then taken from a container using a fine wire. Its diameter was
measured using a millimeter scale with the aid of a hand lens and was found to be 0.35mm. The oil
drop was carefully transferred onto the water surface where it spread to form a circular patch of
diameter 14cm.
(a) Explain briefly why:
(0) It was important to use clean water for this experiment.
(1 marks)
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02-2​

falling water hydro = water .. spectcular places these plants are

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.